Improvement in fire-boxes for stoves



L. J. STEWART. Fire-Box for Stoves.

Patented April 29,1879.

INVENTOR WITNESSES my ATTORNEY N-PEIERS. PHDTO-LITHOGRAPHER, WASHINGTONvD C.

UNITED STATES PATENT OFFICE.

LEVIN J. STEWART, OF NORFOLK, VIRGINIA.

IMPROVEMENT lN FIRE-BOXES FOR STOVES.

Specification forming part of Letters Patent No. 214,964., dated April29, 1879; application .filed February 10, 1879.

To all whom it may concern:

Be it known that I, LEVIN J. STEWART, of Norfolk, in the county ofNorfolk and State of Virginia, have invented a new and valuableImprovement in Fire-Boxes for Stoves, Furnaces, and Fire-Places; and Ido hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawings, making a part of this specification,and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a top View of myimproved revolving firebox for stoves, 860. Fig. 2 is a longitudinalsection of the same, and Fig. 3 is a transverse section thereof.

This invention has relation to improvements in grates.

The nature of the invention consists in the construction and novelarrangement of parts, as hereinafter shown and described.

In the annexed drawings, the letter A designates a cylindrical metallicbox, having at each end a projecting trunnion, a, by means of which itisjournaled in a stove, furnace, or fire-place. In this cylinder, atopposite sides, are made rectangular openings b, at the ends of whichare formed rabbets c, that support the grates B. These are curvedtransversely, and fit snugly on the rabbets c, and provided withdepressed end bars, w, as shown in Fig. 2, thereby being adapted to belocked to the fire-box by means of buttons 0, pivoted in recesses d inthe said box, as shown in Fig. 1. Goal is put in the box through one ofthe grateopenings, and fired in the usualway, one of the grates beingdown and the other up. The

coal next the lowest grate is first consumed, leaving a residuum ofashes and partly-burnt cinders. The attendant then turns the grate over,the lower grate thus changing places with the upper one. The unconsumedcoal is by this means brought to the bottom of the fire-box, and thefire starts afresh, penetrating all the ashes on top, and completelyconsuming the half-burnt fuel among the cinders. Usually when the fireis under way the upper grate is removed. When both grates are in place,if a rotary motion be imparted to the fire-box, the ashes will be veryeffectually sifted out, leaving room for a fresh supply of coal. Thetrunnions are seated in open bearings, so that the fire-box may bereadily lifted out and transferred to a fire-place, stove, or other likedevice in another room.

I am aware that removable cylindrical grates adapted to contain coal andreverse the contents are not, broadly, new.

What I claim as new, and desire to secure by Letters Patent, is-

A rotating cylindrical fire-box, A, having the recesses d at its ends,the buttons 0, pivoted in said recesses, the rectangular openings 1),provided with rabbets c, and the detachable grates B, having thedepressed end bars, a, locked to the box by said buttons, allconstructed and arranged to operate either with a stove, fire-place, orfurnace, as described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

LEVIN JONES STEWART.

Witnesses:

B. R. SUMMERS, A. P. WHITE.

